Dipper



Feb. 5, 1952 5, J BOEHRINGER 2,584,416.

DIPPER Filed April 1. 1949 2 SHEETSSHEET l I mvEm-oz 7 OQLLPL ATTORNEYFeb. 5, 1952 5, BOEHRlNGER 2,584,416

DIPPER Filed April 1, 1949 2 SHEETS-SHEET 2 6 I llVENTOR S e sv 5,4,091% ATTOR N EY Patented Feb. 5, 1952 UNITED STATES PATENT OFFICE DIPPERSamuel J. Boehringer, Milwaukee, Wis.

Application April 1, 1949, Serial No. 84,928

1 Claim.

The invention relates to excavating clippers or buckets and moreparticularly to a fabricated type of bucket.

In buckets of the type above described, the front of the bucket or thatside which carries the digging teeth is subjected to the greatest amountof wear, and consequently various forms of buckets have been made inwhich this front may, in case of wear, be removed from the remainder ofthe bucket and be replaced by a new front. In all of the forms ofreplaceable fronts for dipper buckets heretofore proposed it has beennecessary to use a great quantity of rivets to connect the front to thesides of the bucket. The main object of the present invention is toprovide a bucket in which the joint between the sides of the bucket andthe upturned sides of the front is so formed that-only a few, three forexample, rivets are necessary to hold the parts in assembled relation,and these rivets are at no time subjected to shearing strains that maybe imposed on the bucket parts. More particularly according to thepresent invention, portions of the sides of the bucket and spacedportions of upturned sides of the front have slidably engageable angledtongue and groove connections with each other that prevent lateralslippage or separation of the parts relative to each other, and thesides also have a dead end mounting in the front portion of the front toresist endwise movement of the parts relative to each other duringdigging operations.

The invention further consists in the several features hereinafter setforth and more particularly defined by claims at the conclusion hereof.

In the drawings:

Fig. 1 is a perspective view of a dipper embodying the invention;

Fig. 2 is a perspective view of parts of the dipper, parts being brokenaway;

Fig. 3 is a side elevation view of the bucket, parts being broken awayand parts being shown in section;

Fig. 4 is a plan view of the front of the bucket, parts being brokenaway;

Fig. 5 is a detailed vertical sectional view taken on the line 5-5 ofFig. 3;

' or other lifting device.

Fig. 6 is a detailed vertical sectional view taken 7 The presentinvention is concerned with the connection of the front ID to the sidesll of the dipper. The front I0 is a metal casting provided with socketsfor reception of the replaceable teeth 22 which have a tapered fit insaid sockets and are held against accidental displacement by cotter pins23 in accordance with the usual practice. The front 10 has upturned orangled side portions 24, and in accordance with this invention each sideportion has a longitudinally extending slot 25 open at the back 26 andextending to a dead end 27 near the mouth of the bucket. The front 28and back portion 29 of the slot 25 are narrower in their upper portionsthan in their bottom portions to provide angled slots having an angledbottom 30. Between the parts 28 and 29 the slot 25 is the same width asthe angled bottom 30 of the parts 28 and 29.

The arches l5 and I6 forming portions of the sides ll of the dipper haveextensions 3|, each grooved at 32 to form in efiect a channelled endwith an outwardly projecting bottom flange 33. These grooved portions 32of the sides are adapted to slidably interlock with the complementaryslots 28 and 29 in the front when brought into register with each other.The distance of the widemouthed portion of the slot 25 between thearches l5 and 16 may be somewhat greater than the length of theextension 3| of the arch l5, so that when this extension is ahned withsaid portion of the slot and moved down into the same until the flanges33 register with the bottoms 30, the front may be moved backwardly orthe sides forwardly to interlock the extensions 3| with the sideportions 24 of the front, as shown in Fig. 5, at which time theextension 3| of the arch l5 abuts the dead end 21 of the front.Thereafter, rivets 34 are inserted in the alined holes 35 and 36 of thefront and the side extensions and fastened in place, and then to keepout dirt from the slot 25 a quadrant 31 of tubing may be welded at itstop and bottom edges to the plate l1 and front, as shown in Fig. 6. Toremove the front all that is necessary is to burn off the weld for thetube 31 and burn or shear the rivets 34 and drive them out. Only threerivets on a side are necessary to hold the front to the bucket, andbecause of the joint described above, they are relieved of any endthrust strains that may be imparted to the bucket by impacts against thetoothed front and any lateral strains tending to separate the front fromthe sides of the bucket or dipper..

It will, of course, be underst'0o'dthat the slot 25 may be formed withan angled bottom throughout its length, if desired, and the plate I!have an angled member 38 welded thereto,

as shown in Fig. 8, so that the front may be united with the sides byrelative movement of these parts the full length of the slot, but thefirst described construction is lighter, and less movement of the partsto effect the connection is necessary.

It is also to be noted that by providing the slot 25 in the front 10both the front and-rear sides of those portions of the dipper that joinwith the front are protected from wear, and the rivets do not have toresist racking strains,

-I desire it to be understood that this invention is not to be limitedto any particular form or arrangement of parts except in so far as suchlimitations are included in the claim.

What I claim as my invention is:

In a dipper, the combination of a frontprovided with upturned sideshaving lengthwise 4 extending slots therein, and sides having lengthwisespaced portions fitting said slots and forming therewith lengthwiseslidable tongue and groove connections to prevent separation of saidsides and front, said slots in the front between said spaced portionsbeing open slots of a length greater than said spaced portions to permitremoval of said front from said sides on relative movementof said partsthe length of one set of said spaced ortions, said front havingabutments at one end of said slots engageable with the front ends ofsaid sides to resist relative end thrust movement of said front andsides, and fastening means for holding said front and sides in assembledrelation.

SAMUEL J. BOEHRINGER.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 1,479,340 Trainor Jan. 1, 19241,539,863 Pemberton June 2, 1925 1,545,943 Crane July 14, 1925 1,574,444Reynolds Feb. 23, 1926 1,728,964 Gross Sep. 24, 1929 1,945,064 MurtaughJan; 30, 1934 2,336,729 Harris et a1 Dec. 14, 1943 2,427,897 Burdick eta1 Sept. 23, 1947

